Shank element for a drive fastener



FIG. 1 is a front elevation of a shank element for a drive fastener;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side elevation view thereof;

FIG. 5 is a rear elevation thereof.

The broken lines are shown for illustrative purposes only. 

The ornamental design for a shank element for a drive fastener, substantially as shown and described. 